finish tmp112a

inc/LDC1612.h

@@ -60,6 +60,6 @@ void I2C_scan(void);
 
 int LDC1612_IIC_read_16bits(void);
 
-
+uint32_t TMP112A_ReadTemperature(void);
 
 #endif //LDC1612_H

inc/main.h

@@ -43,7 +43,5 @@ OF SUCH DAMAGE.
 #define LED_IRQ             TIMER16_IRQn
 
 void led_config(void);
-void iicSendData(void);
-void iicReceiveData(void);
 
 #endif /* MAIN_H */

src/LDC1612.c

@@ -4,8 +4,6 @@
 
 #include "LDC1612.h"
 
-
-
 void I2C_config(void) {
     rcu_periph_clock_enable(RCU_IR_GPIO);
     rcu_periph_clock_enable(RCU_I2C);
@@ -26,17 +24,6 @@ void I2C_config(void) {
     i2c_ack_config(I2C0, I2C_ACK_ENABLE);
 }
 
-// void LDC1612_Init(void) {
-//     uint8_t RCOUNT0_ALL[3]={SET_CONVERSION_TIME_REG_START,0x05,0x36};//csdn
-//     uint8_t SETTLECOUNT0_ALL[3]={SET_LC_STABILIZE_REG_START,0x00,0x0a};
-//     uint8_t CLOCK_DIVIDERS0_ALL[3]={SET_FREQ_REG_START,0x10,0x02};
-//     uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_REG,0x00,0x00};
-//     uint8_t MUX_CONFIG_ALL[3]={MUL_CONFIG_REG,0x82,0x0c};
-//     uint8_t DRIVE_CURRENT0_ALL[3]={SET_DRIVER_CURRENT_REG,0x90,0x00};
-//     uint8_t CONFIG_ALL[3]={SENSOR_CONFIG_REG,0x14,0x01};//csdn
-//
-// }
-
 /**
  * @brief 扫描I2C总线，查找连接的设备
  *
@@ -198,4 +185,114 @@ int LDC1612_IIC_read_16bits(void) {
 
     printf("device id = %x\r\n", (data[0] <<8 | data[1]));
     return 0;
+}
+
+uint32_t TMP112A_ReadTemperature(void) {
+    uint8_t data[2] = {0};
+    uint16_t raw_temp = 0;
+    uint16_t timeout = 0;
+    uint32_t temperature = 0;
+
+    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
+
+    while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) //判断IIC总线是否忙，发送起始信号
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_start_on_bus(I2C0);
+        timeout = 0;
+    } else {
+        printf("err\r\n");
+        return -1; // 超时返回错误
+    }
+
+    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) //判断起始位是否发送，设置sensor地址并设置为写
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_master_addressing(I2C0, TMP112A_ADDR, I2C_TRANSMITTER);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    while (!i2c_flag_get(I2C0, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT)) //判断地址是否发送完成，然后发送寄存器地址
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_data_transmit(I2C0, 0x00);
+        timeout = 0;
+        // i2c_start_on_bus(I2C0);
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    while (i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) //判断发送缓冲器是否为空，为空后（发送完毕）重新发送开始信号
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_start_on_bus(I2C0);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) {
+        timeout++;
+    }
+    if (timeout < I2C_TIME_OUT) {
+        i2c_master_addressing(I2C0, TMP112A_ADDR, I2C_RECEIVER);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout < I2C_TIME_OUT) {
+        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    // 读取第一个字节的数据
+    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
+        timeout++;
+    }
+    if (timeout < I2C_TIME_OUT) {
+        data[0] = i2c_data_receive(I2C0);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    i2c_ack_config(I2C0, I2C_ACK_DISABLE); // 关闭发送ACK，它会在下一个字节完成后发送NAK
+
+    // 读取第二个字节的数据
+    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
+        timeout++;
+    }
+    if (timeout < I2C_TIME_OUT) {
+        data[1] = i2c_data_receive(I2C0);
+        timeout = 0;
+    } else {
+        return -1; // 超时返回错误
+    }
+
+    i2c_stop_on_bus(I2C0);
+
+    // printf("data[0]: %x, data[1]: %x\r\n", data[0], data[1]);
+    raw_temp = ((uint16_t) (data[0] << 4) | (data[1]>>4));
+    // printf("raw_temp: %x\r\n", raw_temp);
+    // printf("raw_temp(dec): %d\r\n", raw_temp);
+    temperature = raw_temp * 625;
+    // printf("temperature: %d\r\n", temperature);
+
+    return temperature;
 }

src/RS485.c

@@ -4,6 +4,8 @@
 
 #include "RS485.h"
 
+extern uint32_t g_temperature_uint32;
+
 void RS485_config(void) {
     rcu_periph_clock_enable(RS485_GPIO_RCU);
     rcu_periph_clock_enable(RS485_RCU);
@@ -35,7 +37,8 @@ void process_command(char *cmd) {
     if (strncmp(cmd, "M1", 2) == 0) {
         printf("M1 -=-=- OK!\r\n");
     } else if (strncmp(cmd, "M2", 2) == 0) {
-        printf("M2 -=-=- OK!\r\n");
+        // printf("M2 -=-=- OK!\r\n");
+        printf("Temperature: %lu\r\n", g_temperature_uint32);
         // } else if (strncmp(cmd, "M3", 2) == 0) {
         //     char *param_str = cmd + 2; // Skip "M3"
         //     int param = atoi(param_str + 1); // Skip "S" and convert to integer

src/gd32e23x_it.c

@@ -36,6 +36,10 @@ OF SUCH DAMAGE.
 #include "main.h"
 #include "systick.h"
 #include "LDC1612.h"
+#include "RS485.h"
+
+char rx_buffer[RX_BUFFER_SIZE];
+uint8_t rx_index = 0;
 
 /*!
     \brief      this function handles NMI exception
@@ -120,4 +124,24 @@ void TIMER16_IRQHandler(void) {
         }
         led_status = !led_status;
     }
+}
+
+void USART0_IRQHandler(void) {
+    if(RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE))
+    {
+        usart_interrupt_flag_clear(USART0, USART_INT_FLAG_RBNE);
+        uint8_t received_data = (uint8_t)usart_data_receive(USART0);
+
+        // 将接收到的数据存储到缓冲区
+        if(rx_index < RX_BUFFER_SIZE - 1) {
+            rx_buffer[rx_index++] = received_data;
+        }
+
+        // 检查是否接收到换行符，表示指令结束
+        if(received_data == '\n') {
+            rx_buffer[rx_index] = '\0'; // 添加字符串结束符
+            process_command(rx_buffer); // 处理指令
+            rx_index = 0; // 重置缓冲区索引
+        }
+    }
 }

src/main.c

@@ -12,6 +12,8 @@
 #include "RS485.h"
 #include "LDC1612.h"
 
+uint32_t g_temperature_uint32;
+
 void led_config(void)
 {
     rcu_periph_clock_enable(LED_RCU);
@@ -40,51 +42,6 @@ void led_config(void)
     nvic_irq_enable(LED_IRQ, 2);
 }
 
-void iicSendData(void)
-{
-    while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
-    i2c_start_on_bus(I2C0);
-    printf("1\r\n");
-    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));
-    i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
-    printf("2\r\n");
-    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));
-    i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-    printf("3\r\n");
-    while (!i2c_flag_get(I2C0, I2C_FLAG_TBE));
-    i2c_data_transmit(I2C0, 0x7E);
-    printf("4\r\n");
-    i2c_start_on_bus(I2C0);
-}
-
-void iicReceiveData(void)
-{
-    uint16_t data[3] = {0};
-    i2c_start_on_bus(I2C0);
-    // i2c_stop_on_bus(I2C0);
-    printf("5\r\n");
-    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));
-    i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_RECEIVER);
-    printf("6\r\n");
-    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));
-    i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-    printf("7\r\n");
-    i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE));
-    data[0] = i2c_data_receive(I2C0);
-    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE));
-    data[1] = i2c_data_receive(I2C0);
-    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE));
-    data[2] = i2c_data_receive(I2C0);
-
-    i2c_stop_on_bus(I2C0);
-    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-
-    printf("data[0] = %x\r\n", data[0]);
-    printf("data[1] = %x\r\n", data[1]);
-    printf("data[2] = %x\r\n", data[2]);
-}
-
 /*!
     \brief      main function
     \param[in]  none
@@ -99,58 +56,18 @@ int main(void)
     led_config();
     I2C_config();
 
-    // delay_ms(5000);
     printf("\r\n");
     printf("XLSW-3DP-LDC1612! V0.0.1\r\n");
     printf("\r\n");
 
-    // uint16_t data[3] = {0};
 
     // I2C_scan();
 
     delay_ms(1000);
 
-    // while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
-    // i2c_start_on_bus(I2C0);
-    // printf("1\r\n");
-    // while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));
-    // i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
-    // printf("2\r\n");
-    // while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));
-    // i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-    // printf("3\r\n");
-    // while (!i2c_flag_get(I2C0, I2C_FLAG_TBE));
-    // i2c_data_transmit(I2C0, 0x7E);
-    // printf("4\r\n");
-    // i2c_start_on_bus(I2C0);
-    // // i2c_stop_on_bus(I2C0);
-
-
-    // delay_ms(100);
-    // i2c_start_on_bus(I2C0);
-    // delay_ms(100);
-    // i2c_stop_on_bus(I2C0);
-
-
-    // i2c_stop_on_bus(I2C0);
-    // i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-
-    // iicSendData();
-    // iicReceiveData();
-
-    int result = 0;
-    result = LDC1612_IIC_read_16bits();
-    printf("result = %d\r\n", result);
-
     while(1){
-
-
-        delay_ms(1000);
-        printf("OK!!!\r\n");
-        // iicSendData();
-
-        // i2c_flag_clear(I2C0, I2C_FLAG_I2CBSY);
-
+        g_temperature_uint32 = TMP112A_ReadTemperature();
+        delay_ms(500);
     }
 }